Dekodieren

Knacken Sie den Code! 🔓

console.log('Time to crack the code! 🔓')

Das Gegenteil des Kodierens 🔄

console.log('Encode: forward ➡️')
console.log('Decode: backward ⬅️')

Einen Buchstaben zurückschieben ⬅️

let n = 'd'.charCodeAt(0)
console.log('d back by 3:', String.fromCharCode(n - 3))

Wir benötigen den Schlüssel 🗝️

let key = 3
console.log('The secret key is:', key)

Das Geheimnis durchlaufen 🔁

let secret = 'kh'
let key = 3
for (let i = 0; i < secret.length; i++) {
  console.log(String.fromCharCode(secret.charCodeAt(i) - key))
}

Die echte Nachricht sammeln 📥

let secret = 'kh'
let key = 3
let real = ''
for (let i = 0; i < secret.length; i++) {
  real += String.fromCharCode(secret.charCodeAt(i) - key)
}
console.log('Real message:', real)

Ein vollständiges Wort dekodieren 🎉

let secret = 'khoor'
let key = 3
let real = ''
for (let i = 0; i < secret.length; i++) {
  real += String.fromCharCode(secret.charCodeAt(i) - key)
}
console.log('Decoded:', real)

Eine Dekodierungsfunktion 🛠️

function decode(secret, key) {
  let out = ''
  for (let i = 0; i < secret.length; i++) {
    out += String.fromCharCode(secret.charCodeAt(i) - key)
  }
  return out
}
console.log(decode('ecv', 2))

Erst kodieren, dann dekodieren 🔄

function shiftAll(msg, k) {
  let out = ''
  for (let i = 0; i < msg.length; i++) out += String.fromCharCode(msg.charCodeAt(i) + k)
  return out
}
let secret = shiftAll('hi', 3)
let back = shiftAll(secret, -3)
console.log('Secret:', secret, 'Back:', back)

Falscher Schlüssel, falsche Nachricht ❌

function decode(s, k) {
  let out = ''
  for (let i = 0; i < s.length; i++) out += String.fromCharCode(s.charCodeAt(i) - k)
  return out
}
console.log('Right key:', decode('khoor', 3))
console.log('Wrong key:', decode('khoor', 1))

Vollständiger Dekodierer 🎮

function decode(s, k) {
  let out = ''
  for (let i = 0; i < s.length; i++) out += String.fromCharCode(s.charCodeAt(i) - k)
  return out
}
console.log('Secret: phhw ph')
console.log('Real:', decode('phhw ph', 3))

Kurze Überprüfung ✅

Meisterspion! 🌟

console.log('Secret Code Maker: COMPLETE! 🌟🏆')